﻿#region Copyright (c) 2013-02, Olaf Kober <amarok.projects@gmail.com>
//================================================================================
//	Permission is hereby granted, free of charge, to any person obtaining a copy
//	of this software and associated documentation files (the "Software"), to deal
//	in the Software without restriction, including without limitation the rights
//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//	copies of the Software, and to permit persons to whom the Software is
//	furnished to do so, subject to the following conditions:
//
//	The above copyright notice and this permission notice shall be included in
//	all copies or substantial portions of the Software.
//
//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//	THE SOFTWARE.
//================================================================================
#endregion

using System;
using System.ComponentModel;
using System.Threading;
using System.Windows;


namespace Amarok.Presentation
{
	/// <summary>
	/// A static helper type for design-time support.
	/// </summary>
	public static class Designer
	{
		#region ++ Public Static Interface (Categories) ++

		/// <summary>
		/// Gets the name of the custom properties category.
		/// </summary>
		public const String CustomPropertiesCategory = "Custom Properties";

		#endregion

		#region ++ Public Static Interface (InDesignMode, InRuntimeMode) ++

		// static data
		private static Lazy<Boolean> sLazyIsInDesignMode = new Lazy<Boolean>(
			_ResolveIsDesignMode,
			LazyThreadSafetyMode.PublicationOnly);


		private static Boolean _ResolveIsDesignMode()
		{
			return (Boolean)DependencyPropertyDescriptor
				.FromProperty(DesignerProperties.IsInDesignModeProperty, typeof(FrameworkElement))
				.Metadata
				.DefaultValue;
		}


		/// <summary>
		/// Gets a value indicating whether the code is in design mode, running in either Expression Blend 
		/// or Visual Studio.
		/// </summary>
		public static Boolean IsDesignMode
		{
			get
			{
				return sLazyIsInDesignMode.Value;
			}
		}

		/// <summary>
		/// Gets a value indicating whether the code is in runtime mode, running neither in Expression Blend nor 
		/// in Visual Studio.
		/// </summary>
		public static Boolean IsRuntimeMode
		{
			get
			{
				return !Designer.IsDesignMode;
			}
		}

		#endregion

	}
}
